We are offering trichloroacetyl chloride. Trichloroacetyl chloride is the acyl chloride of trichloroacetic acid. It can be formed by reacting chlorine with acetyl chloride or acetaldehyde in the presence of activated charcoal. formula: c2cl4omolar mass: 181.832 gmoldensity: 1.62 gcmboiling point: 117.9 c